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Genetic Associations At 53 Loci Highlight Cell Types And Biological Pathways Relevant For Kidney Function, Cristian Pattaro, Alexander Teumer, Mathias Gorski, Audrey Y. Chu, Man Li, Vladan Mijatovic, Maija Garnaas, Adrienne Tin, Rossella Sorice, Yong Li, Daniel Taliun, Matthias Olden, Meredith Foster, Qiong Yang, Ming Huei Chen, Tune H. Pers, Andrew D. Johnson, Yi An Ko, Christian Fuchsberger, Bamidele Tayo, Michael Nalls, Mary F. Feitosa, Aaron Isaacs, Abbas Dehghan, Pio D'Adamo, Adebowale Adeyemo, Aida Karina Dieffenbach, Alan B. Zonderman, Ilja M. Nolte, Peter J. Van Der Most, Alan F. Wright, Alan R. Shuldiner, Alanna C. Morrison Jan 2016

Genetic Associations At 53 Loci Highlight Cell Types And Biological Pathways Relevant For Kidney Function, Cristian Pattaro, Alexander Teumer, Mathias Gorski, Audrey Y. Chu, Man Li, Vladan Mijatovic, Maija Garnaas, Adrienne Tin, Rossella Sorice, Yong Li, Daniel Taliun, Matthias Olden, Meredith Foster, Qiong Yang, Ming Huei Chen, Tune H. Pers, Andrew D. Johnson, Yi An Ko, Christian Fuchsberger, Bamidele Tayo, Michael Nalls, Mary F. Feitosa, Aaron Isaacs, Abbas Dehghan, Pio D'Adamo, Adebowale Adeyemo, Aida Karina Dieffenbach, Alan B. Zonderman, Ilja M. Nolte, Peter J. Van Der Most, Alan F. Wright, Alan R. Shuldiner, Alanna C. Morrison

Faculty Publications

Reduced glomerular filtration rate defines chronic kidney disease and is associated with cardiovascular and all-cause mortality. We conducted a meta-analysis of genome-wide association studies for estimated glomerular filtration rate (eGFR), combining data across 133,413 individuals with replication in up to 42,166 individuals. We identify 24 new and confirm 29 previously identified loci. Of these 53 loci, 19 associate with eGFR among individuals with diabetes. Using bioinformatics, we show that identified genes at eGFR loci are enriched for expression in kidney tissues and in pathways relevant for kidney development and transmembrane transporter activity, kidney structure, and regulation of glucose metabolism. Chromatin …

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The Modulation Of Adiponectin By Stat5-Activating Hormones, Ursula A. White, Joel Maier, Peng Zhao, Allison J. Richard, Jacqueline M. Stephens Jan 2016

The Modulation Of Adiponectin By Stat5-Activating Hormones, Ursula A. White, Joel Maier, Peng Zhao, Allison J. Richard, Jacqueline M. Stephens

Faculty Publications

© 2016 the American Physiological Society. Adiponectin is a hormone secreted from adipocytes that plays an important role in insulin sensitivity and protects against metabolic syndrome. Growth hormone (GH) and prolactin (PRL) are potent STAT5 activators that regulate the expression of several genes in adipocytes. Studies have shown that the secretion of adiponectin from adipose tissue is decreased by treatment with PRL and GH. In this study, we demonstrate that 3T3-L1 adipocytes treated with GH or PRL exhibit a reduction in adiponectin protein levels. Furthermore, we identified three putative STAT5 binding sites in the murine adiponectin promoter and show that …

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Examination Of Commercially Available Copper Oxide Wire Particles In Combination With Albendazole For Control Of Gastrointestinal Nematodes In Lambs, J. M. Burke, J. E. Miller, T. H. Terrill, E. Smyth, M. Acharya Jan 2016

Examination Of Commercially Available Copper Oxide Wire Particles In Combination With Albendazole For Control Of Gastrointestinal Nematodes In Lambs, J. M. Burke, J. E. Miller, T. H. Terrill, E. Smyth, M. Acharya

Faculty Publications

© 2015 Published by Elsevier B.V. Control of gastrointestinal nematodes (GIN) remains a critical issue due to the prevalence of anthelmintic resistance. The objective of the experiment was to determine the efficacy of copper oxide wire particles (COWP) from three commercial sources and a combination of COWP and albendazole to control GIN and/or Haemonchus contortus in lambs. Naturally infected Katahdin lambs in early June 2014 and 2015 were randomly assigned to receive no COWP (CON; n = 9 and 12) or 2 g COWP in a gel capsule as Copasure® (COP; n = 4 and 17; Animax Ltd.), copper oxide-wire …

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Plant Microfossils Recovered From Dental Calculus At Casas Grandes, Mexico, Daniel King, Michael T. Searcy, Kyle Waller Jan 2016

Plant Microfossils Recovered From Dental Calculus At Casas Grandes, Mexico, Daniel King, Michael T. Searcy, Kyle Waller

Faculty Publications

Microfossil analysis is a technique used to better understand prehistoric diets. As part of a larger multinational project, we gathered and analyzed 112 samples of dental calculus (fossilized plaque) from human remains discovered at Paquimé and other sites in the Casas Grandes river valley to identify various microfossils still present in the silica matrix. With this information, we are able to better understand the flora present during ancient times and how it was used (food, processing, etc.).

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Preparation Of Metalloporphyrin-Bound Superparamagnetic Silica Particles Via "Click" Reaction, Javoris V. Hollingsworth, N. V.S.Dinesh K. Bhupathiraju, Jirun Sun, Eric Lochner, M. Graça H. Vicente, Paul S. Russo Jan 2016

Preparation Of Metalloporphyrin-Bound Superparamagnetic Silica Particles Via "Click" Reaction, Javoris V. Hollingsworth, N. V.S.Dinesh K. Bhupathiraju, Jirun Sun, Eric Lochner, M. Graça H. Vicente, Paul S. Russo

Faculty Publications

© 2015 American Chemical Society. A facile approach using click chemistry is demonstrated for immobilization of metalloporphyrins onto the surface of silica-coated iron oxide particles. Oleic-acid stabilized iron oxide nanocrystals were prepared by thermal decomposition of iron(III) acetylacetonate. Their crystallinity, morphology, and superparamagnetism were determined using X-ray diffraction, transmission electron microscopy, and a superconducting quantum interference device. Monodisperse core-shell particles were produced in the silica-coating of iron oxide via microemulsion synthesis. Surface modification of these particles was performed in two steps, which included the reaction of silica-coated iron oxide particles with 3-bromopropyltrichlorosilane, followed by azido-functionalization with sodium azide. Monoalkylated porphyrins …

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Impact Of The 2010 Deepwater Horizon Oil Spill On Population Size And Genetic Structure Of Horse Flies In Louisiana Marshes, Claudia Husseneder, Jennifer R. Donaldson, Lane D. Foil Jan 2016

Impact Of The 2010 Deepwater Horizon Oil Spill On Population Size And Genetic Structure Of Horse Flies In Louisiana Marshes, Claudia Husseneder, Jennifer R. Donaldson, Lane D. Foil

Faculty Publications

The greenhead horse fly, Tabanus nigrovittatus Macquart, is frequently found in coastal marshes of the Eastern United States. The greenhead horse fly larvae are top predators in the marsh and thus vulnerable to changes in the environment, and the adults potentially are attracted to polarized surfaces like oil. Therefore, horse fly populations could serve as bioindicators of marsh health and toxic effects of oil intrusion. In this study, we describe the impact of the April 2010 Deep Water Horizon oil spill in the Gulf of Mexico on tabanid population abundance and genetics as well as mating structure. Horse fly populations …

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Three Popular Medicinal Mushroom Supplements: A Review Of Human Clinical Trials, Megan Frost Jan 2016

Three Popular Medicinal Mushroom Supplements: A Review Of Human Clinical Trials, Megan Frost

Faculty Publications

There are many mushroom supplements on the market claiming a variety of health benefits, and it is difficult to discern which of these claims is backed by reliable research. Most of the existing research is conducted using either human cells or animal models rather than human participants. Without being tested directly on humans, this research has limited application. A review of the literature reveals a relatively small number of studies have been conducted using human patients and those that do exist vary widely in study design and quality. This article brings together all the existing studies that involve human participants …

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Uncoupling Caveolae From Intracellular Signaling In Vivo, Jan R. Kraehling, Zhengrong Hao, Monica Y. Lee, David J. Vinyard, Heino Velazquez, Xinran Liu, Radu V. Stan, Gary W. Brudvig, William C. Sessa Jan 2016

Uncoupling Caveolae From Intracellular Signaling In Vivo, Jan R. Kraehling, Zhengrong Hao, Monica Y. Lee, David J. Vinyard, Heino Velazquez, Xinran Liu, Radu V. Stan, Gary W. Brudvig, William C. Sessa

Faculty Publications

© 2016 Nature America, Inc. Rationale: Caveolin-1 (Cav-1) negatively regulates endothelial nitric oxide (NO) synthase-derived NO production, and this has been mapped to several residues on Cav-1, including F92. Herein, we reasoned that endothelial expression of an F92ACav-1 transgene would let us decipher the mechanisms and relationships between caveolae structure and intracellular signaling. Objective: This study was designed to separate caveolae formation from its downstream signaling effects. Methods and Results: An endothelial-specific doxycycline-regulated mouse model for the expression of Cav-1-F92A was developed. Blood pressure by telemetry and nitric oxide bioavailability by electron paramagnetic resonance and phosphorylation of vasodilator-stimulated phosphoprotein were …

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Molar Tooth Carbonates And Benthic Methane Fluxes In Proterozoic Oceans, Bing Shen, Lin Dong, Shuhai Xiao, Xianguo Lang, Kangjun Huang, Yongbo Peng, Chuanming Zhou, Shan Ke, Pengju Liu Jan 2016

Molar Tooth Carbonates And Benthic Methane Fluxes In Proterozoic Oceans, Bing Shen, Lin Dong, Shuhai Xiao, Xianguo Lang, Kangjun Huang, Yongbo Peng, Chuanming Zhou, Shan Ke, Pengju Liu

Faculty Publications

Molar tooth structures are ptygmatically folded and microspar-filled structures common in early- and mid-Proterozoic (â 1/42,500-750 million years ago, Ma) subtidal successions, but extremely rare in rocks Here, on the basis of Mg and S isotopes, we show that molar tooth structures may have formed within sediments where microbial sulphate reduction and methanogenesis converged. The convergence was driven by the abundant production of methyl sulphides (dimethyl sulphide and methanethiol) in euxinic or H 2 S-rich seawaters that were widespread in Proterozoic continental margins. In this convergence zone, methyl sulphides served as a non-competitive substrate supporting methane generation and methanethiol inhibited …

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Voltammetric Analysis Of Mixtures Of Molten Eutectic Licl-Kcl Containing Lacl3 And Thcl4 For Concentration And Diffusion Coefficient Measurement, Zhong-Hang Wang, Devin Rappleye, Michael F. Simpson Jan 2016

Voltammetric Analysis Of Mixtures Of Molten Eutectic Licl-Kcl Containing Lacl3 And Thcl4 For Concentration And Diffusion Coefficient Measurement, Zhong-Hang Wang, Devin Rappleye, Michael F. Simpson

Faculty Publications

Several electrochemical techniques, including cyclic voltammetry (CV), chronopotentiometry-open circuit potential (CP-OCP), chronoamperometry (CA) and normal pulse voltammetry (NPV) were applied to the eutectic LiCl-KCl melt containing LaCl3 and ThCl4 at 773K. The dependence of diffusion coefficient of La(III) on concentration of LaCl3 was investigated by using CV, CP and CA. As the concentration of LaCl3 increases, the DLa(III) value obtained from CV gradually decreases, while the values derived from CA and CP exhibit a dome-shaped variation trend. In the LiCl-KCl-LaCl3-ThCl4 system, the diffusion coefficients of La(III) and Th(IV) are both approximately constant …

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Influence Of Hemlock Woolly Adelgid Infestation On The Physiological And Reflectance Characteristics Of Eastern Hemlock, Justin Patrick Williams, Ryan P. Hanavan, Barrett N. Rock, Subhash C. Minocha, Ernst Linder Jan 2016

Influence Of Hemlock Woolly Adelgid Infestation On The Physiological And Reflectance Characteristics Of Eastern Hemlock, Justin Patrick Williams, Ryan P. Hanavan, Barrett N. Rock, Subhash C. Minocha, Ernst Linder

Faculty Publications

The hemlock woolly adelgid (HWA) (Adelges tsugae Annand) is an invasive insect in the eastern United States. Since its initial detection in Richmond, Virginia, in 1951, HWA has spread to half of the eastern hemlock (Tsuga canadensis (L.) Carr.) natural range. Detection of early infestation symptoms via remote sensing requires the knowledge of the changes in reflectance resulting from physiological changes in the host as inflicted by the insect and the selection of equipment with the appropriate sensor characteristics. Laboratory-based reflectance measurements of infested and non-infested hemlock foliage collected from four sites in southern New Hampshire and Maine occurred biweekly …

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Mechanobiology Of Antimicrobial Resistant Escherichia Coli And Listeria Innocua, Mehrdad Tajkarimi, Scott H. Harrison, Albert M. Hung, Joseph L. Graves Jr. Jan 2016

Mechanobiology Of Antimicrobial Resistant Escherichia Coli And Listeria Innocua, Mehrdad Tajkarimi, Scott H. Harrison, Albert M. Hung, Joseph L. Graves Jr.

Faculty Publications

A majority of antibiotic-resistant bacterial infections in the United States are associated with biofilms. Nanoscale biophysical measures are increasingly revealing that adhesive and viscoelastic properties of bacteria play essential roles across multiple stages of biofilm development. Atomic Force Microscopy (AFM) applied to strains with variation in antimicrobial resistance enables new opportunities for investigating the function of adhesive forces (stickiness) in biofilm formation. AFM force spectroscopy analysis of a field strain of Listeria innocua and the strain Escherichia coli K-12 MG1655 revealed differing adhesive forces between antimicrobial resistant and nonresistant strains. Significant increases in stickiness were found at the nanonewton level …

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Inhibition Of Enterobacter Cloacae And Klebsiella Oxytoca By Garlic (Allium Sativum L.) And Garlic Pills, Lucinda Choules, Dennis A. Gravatt, Stephen M. Kosovich, Wei Yuan, Ping Wang, Ron Havner Jan 2016

Inhibition Of Enterobacter Cloacae And Klebsiella Oxytoca By Garlic (Allium Sativum L.) And Garlic Pills, Lucinda Choules, Dennis A. Gravatt, Stephen M. Kosovich, Wei Yuan, Ping Wang, Ron Havner

Faculty Publications

Multidrug resistant infections and superinfections are increasing globally. Intrinsic and acquired resistance to multiple antibiotics by bacteria from the Enterobacteriaceae family exasperate treatment efforts by clinicians. Carbapenem antibiotics were once relied upon to treat multidrug resistant infections. However, Carbapenem Resistant Enterobacteriaceae (CRE) infections are becoming more common, requiring that an alternative treatment be found. This study trialed an ancient cure, Fresh Garlic Extract (FGE) created from garlic (Allium sativum L.) and commercially prepared garlic pills against two opportunistic Enterobacteriaceae in vitro utilizing: disc diffusion, well diffusion (introducing DIFF-bolts), and HPLC. FGE and four brands of garlic pills inhibited the growth …

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Expansion Of The Manage Database With Forest And Drainage Studies, Daren R. Harmel, Laura E. Christianson, Matthew W. Mcbroom, Douglas R. Smith, Kori D. Higgs Jan 2016

Expansion Of The Manage Database With Forest And Drainage Studies, Daren R. Harmel, Laura E. Christianson, Matthew W. Mcbroom, Douglas R. Smith, Kori D. Higgs

Faculty Publications

The “Measured Annual Nutrient loads from AGricultural Environments” (MANAGE) database was published in 2006 to expand an early 1980s compilation of nutrient export (load) data from cultivated and pasture/range land at the field or farm scale. Then in 2008, MANAGE was updated with 15 additional studies, and nitrogen (N) and phosphorus (P) concentrations in runoff were added. Since then, MANAGE has undergone significant expansion adding N and P water quality along with relevant management and site characteristic data from: (1) 30 runoff studies from forested land uses, (2) 91 drainage water quality studies from drained land, and (3) 12 additional …

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Quality And Yield Of Seven Forages Grown Under Partial Shading Of A Simulated Silvopastoral System In East Texas, J. Hill, K. Farrish, B. Oswald, L. Young, A. Shadow Jan 2016

Quality And Yield Of Seven Forages Grown Under Partial Shading Of A Simulated Silvopastoral System In East Texas, J. Hill, K. Farrish, B. Oswald, L. Young, A. Shadow

Faculty Publications

The goal of this project is to evaluate the growth and nutritional characteristics of seven forages, including various warm season native grasses, grown under simulated partial shading (50 percent typical of a loblolly pine silvopastoral system in east Texas. The results are from year two of a three year study. In order to meet the overall objective, individual, slatted shade structures were constructed that simulate the quantity, quality, and overall light regime found beneath loblolly pine stands arranged for silvopasture. The forages selected for the study include ‘Tifton 9’ bahiagrass (Paspalum notatum), ‘Tifton 85’ bermudagrass (Cynodon dactylon), ‘Alamo’ switchgrass (Panicum …

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Road-Edge Effects On Herpetofauna In A Lowland Amazonian Rainforest, Ross J. Maynard, Nathalie C. Aall, Daniel Saenz, Paul S. Hamilton, Matthew Kwiatkowski Jan 2016

Road-Edge Effects On Herpetofauna In A Lowland Amazonian Rainforest, Ross J. Maynard, Nathalie C. Aall, Daniel Saenz, Paul S. Hamilton, Matthew Kwiatkowski

Faculty Publications

The impact of roads on the flora and fauna of Neotropical rainforest is perhaps the single biggest driver of habitat modification and population declines in these ecosystems. We investigated the road-edge effect of a low-use dirt road on amphibian and reptile abundance, diversity, and composition within adjacent lowland Amazonian rainforest at San José de Payamino, Ecuador. The road has been closed to vehicle traffic since its construction in 2010. Thus, effects from vehicle mortality, vehicle-related pollution, and road noise were not confounding factors. Herpetofauna were surveyed using both visual encounter surveys and drift fences with pitfall and funnel traps at …

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Characterization Of The Three Zebrafish Orthologs Of The Mitochondrial Gtpase Miro/Rhot, Brittany M. Hollister, Kelsey A. Oonk, Douglas C. Weiser, Susan Walsh Jan 2016

Characterization Of The Three Zebrafish Orthologs Of The Mitochondrial Gtpase Miro/Rhot, Brittany M. Hollister, Kelsey A. Oonk, Douglas C. Weiser, Susan Walsh

Faculty Publications

Mitochondria exhibit dynamic locomotion and spatial rearrangement. This movement is necessary for a cell to maintain basic metabolic functions, and disruption of motility often results in cell death. Miro is a mitochondrial outer membrane Rho GTPase essential for mitochondrial movement and distribution in diverse systems, including yeast, animals, and plants. We sought to study the previously uncharacterized Miro protein family in zebrafish. We confirmed that, like human Miro, the zebrafish Miro proteins (Rhot1a, Rhot1b, and Rhot2) localize to mitochondria in mammalian tissue culture cells by both biochemical fractionation and immunofluorescent colocalization. In addition, using whole mount in situ hybridization, we …

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Attitudes And Experiences With Older Adults: A Case For Service Learning For Undergraduates, Hardeep Obhi, Erin Woodhead Jan 2016

Attitudes And Experiences With Older Adults: A Case For Service Learning For Undergraduates, Hardeep Obhi, Erin Woodhead

Faculty Publications

The current study examined whether relationship quality with older adults currently and in childhood, as well as experience with older adults, was associated with biases toward older adults and interest in working with older adults as a possible career area. The authors sampled undergraduate students (N = 753, M = 18.97 years, SD = 2.11 years) from a Northern California university. In hierarchical regression analyses, higher perceived quality of relationships with older adult family members, higher perceived social support, and lower perceived conflict from relationships with older adults was significantly associated with positive attitudes toward older adults. Interest in …

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God’S Uses Of The Law And The Effort To Establish A Constitutional Right To The Means To Live, Marie A. Failinger, Patrick R. Keifert Jan 2016

God’S Uses Of The Law And The Effort To Establish A Constitutional Right To The Means To Live, Marie A. Failinger, Patrick R. Keifert

Faculty Publications

No abstract provided.

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High Throughput Genomic Sequencing Of Bioaerosols In Broiler Chicken Production Facilities, Kate M. O’Brien, Michael S. Chimenti, Morgan Farnell, Tom Tabler, Thomas Bair, Joey Lynn Bray, Matthew W. Nonnenmann Jan 2016

High Throughput Genomic Sequencing Of Bioaerosols In Broiler Chicken Production Facilities, Kate M. O’Brien, Michael S. Chimenti, Morgan Farnell, Tom Tabler, Thomas Bair, Joey Lynn Bray, Matthew W. Nonnenmann

Faculty Publications

Chronic inhalation exposure to agricultural dust promotes the development of chronic respiratory diseases among poultry workers. Poultry dust is composed of dander, chicken feed, litter bedding and microbes. However, the microbial composition and abundance has not been fully elucidated. Genomic DNA was extracted from settled dust and personal inhalable dust collected while performing litter sampling or mortality collection tasks. DNA libraries were sequenced using a paired-end sequencing-by-synthesis approach on an Illumina HiSeq 2500. Sequencing data showed that poultry dust is predominantly composed of bacteria (64–67%) with a small quantity of avian, human and feed DNA (< 2% of total reads). Staphylococcus sp. AL1, Salinicoccus carnicancri and Lactobacillus crispatus were the most abundant bacterial species in personal exposure samples of inhalable dust. Settled dust had a moderate relative abundance of these species as well as Staphylococcus lentus and Lactobacillus salivarius. There was a statistical difference between the microbial composition of aerosolized and settled dust. Unlike settled dust composition, aerosolized dust composition had little variance between samples. These data provide an extensive analysis of the microbial composition and relative abundance in personal inhalable poultry dust and settled poultry dust.

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Prevention Strategies And Mental Health In Vietnam, Edward Cohen Jan 2016

Prevention Strategies And Mental Health In Vietnam, Edward Cohen

Faculty Publications

This paper addresses the current state of mental health services in Vietnam and provides recommendations for improving the care of people with mental illness. Vietnam’s mental health problems are as prevalent as anywhere else in the world. The country has recently begun an initiative to reform mental health care by improving community-based services for people with serious mental illness. However, mental illness has not been a part of public discourse in Vietnam. There is little recognition of prevalent common mental illnesses (such as depression, anxiety and alcohol abuse) and the care of people with serious mental illnesses relies on either …

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Winter Conditions Influence Biological Responses Of Migrating Hummingbirds, Catherine H. Graham, Sarah R. Supp, Donald R. Powers, Pieter Beck, Marisa C. Lim Jan 2016

Winter Conditions Influence Biological Responses Of Migrating Hummingbirds, Catherine H. Graham, Sarah R. Supp, Donald R. Powers, Pieter Beck, Marisa C. Lim

Faculty Publications

No abstract provided.

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Habitat Use And Avoidance By Foraging Red-Cockaded Woodpeckers In East Texas, John N. Macey, Brent Burt, Daniel Saenz, Richard N. Conner Jan 2016

Habitat Use And Avoidance By Foraging Red-Cockaded Woodpeckers In East Texas, John N. Macey, Brent Burt, Daniel Saenz, Richard N. Conner

Faculty Publications

Picoides borealis (Red-cockaded Woodpecker) is an endangered bird endemic to the Pinus (pine) ecosystems of the southeastern US. Mature pine savannahs with a minimal midstory and lush herbaceous groundcover represent high-quality habitat. This study examines the foraging-habitat patterns of Red-cockaded Woodpeckers in East Texas. We present a logistic regression model that best differentiates between foraged and non-foraged habitat. Increases in hardwood-midstory basal area have the greatest negative impact on the probability of Red-cockaded Woodpeckers selecting a habitat patch for foraging. Five additional variables negatively impact foraging probability: shrub height, diameter at breast height (DBH) of pine midstory, canopy closure, density …

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Determination Of Hexavalent Chromium (Cr(Vi)) Concentrations Via Ion Chromatography And Uv-Vis Spectrophotometry In Samples Collected From Nacogdoches Wastewater Treatment Plant, East Texas (Usa), Kefa Karimu Onchoke, Salomey A. Sasu Jan 2016

Determination Of Hexavalent Chromium (Cr(Vi)) Concentrations Via Ion Chromatography And Uv-Vis Spectrophotometry In Samples Collected From Nacogdoches Wastewater Treatment Plant, East Texas (Usa), Kefa Karimu Onchoke, Salomey A. Sasu

Faculty Publications

The concentration of hexavalent chromium (Cr(VI)), a toxic environmental pollutant and carcinogen, was determined in samples collected from Nacogdoches Wastewater Treatment Plant (NWWTP) using ion chromatography and UV-visible spectrophotometry (IC, UV-Vis). On reaction with 1,5-diphenylcarbazide (DPC) Cr+6 forms a 1,5-diphenylcarbazide-Cr(VI) complex, which is then analyzed at 530nm and 540nm, respectively. Via ion chromatography Cr(VI) concentrations were in the range of 0.00190 ± 0.0020 and 0.0010 ± 0.0006ppm at the influent and effluent, respectively. With the use of standard addition wastewater samples were spiked with a 0.5ppm Cr(VI) standard of various amounts and subsequently analyzed with UV-Vis spectrophotometry. The spiked concentrations …

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Water Soluble Cationic Porphyrin Sensor For Detection Of Hg2+, Pb2+, Cd2+, And Cu2+, Matibur Zamadar, Christopher Orr, Miranda Uherek Jan 2016

Water Soluble Cationic Porphyrin Sensor For Detection Of Hg2+, Pb2+, Cd2+, And Cu2+, Matibur Zamadar, Christopher Orr, Miranda Uherek

Faculty Publications

Here we report the sensing properties of the aqueous solution of meso-tetra(N-methyl-4-pyridyl)porphine tetrachloride (1) for simultaneous detection of toxic metal ions by using UV-vis spectroscopy. Cationic porphyrin 1 displayed different electronic absorptions in UV-vis region upon interacting with Hg2+, Pb2+, Cd2+, and Cu2+ ions in neutral water solution at room temperature. Quite interestingly, the porphyrin 1 showed that it can function as a single optical chemical sensor and/or metal ion receptor capable of detecting two or more toxic metal ions, particularly Hg2+, Pb2+, and Cd2+ ions coexisting in a water sample. Porphyrin 1 in an aqueous solution provides a unique …

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"High-Valent Copper In Biomimetic And Biological Oxidations", J. Brannon Gary Jan 2016

"High-Valent Copper In Biomimetic And Biological Oxidations", J. Brannon Gary

Faculty Publications

A long-standing debate in the Cu-O2 field has revolved around the relevance of the Cu(III) oxidation state in biological redox processes. The proposal of Cu(III) in biology is generally challenged as no spectroscopic or structural evidence exists currently for its presence. The reaction of synthetic Cu(I) complexes with O2 at low temperature in aprotic solvents provides the opportunity to investigate and define the chemical landscape of Cu-O2 species at a small molecule level of detail; eight different types are characterized structurally, three of which contain at least one Cu(III) center. Simple imidazole or histamine ligands are competent in these oxygenation …

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The Biodiversity Paradigm Shift: Adapting The Endangered Species Act To Climate Change, Kalyani Robbins Jan 2016

The Biodiversity Paradigm Shift: Adapting The Endangered Species Act To Climate Change, Kalyani Robbins

Faculty Publications

The Endangered Species Act (ESA) was designed to protect species that had been rendered more vulnerable to extinction as a result of human activity. As such, its implementation has traditionally focused on keeping human beings away from such species and giving the species (and their ecosystems) space to heal on their own. Climate change is altering the landscape everywhere on the globe, rendering the hands-off approach no longer sufficient. Active interventions will become more necessary as we get further into the changing climate. Taking decisive action in response to climate change will also require a fundamental shift in our approach …

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Tears In Heaven: Religiously And Culturally Sensitive Laws For Preventing The Next Pandemic, Eloisa Rodriguez-Dod, Aileen M. Marty, Elena Marty-Nelson Jan 2016

Tears In Heaven: Religiously And Culturally Sensitive Laws For Preventing The Next Pandemic, Eloisa Rodriguez-Dod, Aileen M. Marty, Elena Marty-Nelson

Faculty Publications

In February 2016, the World Health Organization (WHO) declared a “public health emergency of international concern” due to the increased clusters of microcephaly, Guillain-Barré Syndrome, and other neurological disorders in areas affected by the Zika virus. That declaration came in the wake of the West Africa Ebola crisis. Back to back declarations by WHO of the highest threat level for an international public health emergency underscores how quickly pathogens can now spread and cause devastation across borders. It also highlights the need to implement lessons learned from each pandemic crisis without delay. These crises demonstrate that laws to curtail the …

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Forage Yields In Turkey Hill Wilderness In East Texas For White-Tailed Deer, Brian P. Oswald, Kenneth W. Farrish, Bret Gentzler Jan 2016

Forage Yields In Turkey Hill Wilderness In East Texas For White-Tailed Deer, Brian P. Oswald, Kenneth W. Farrish, Bret Gentzler

Faculty Publications

Wilderness areas are often considered quality areas where natural processes occur without human activity. It is often assumed that these unmanaged areas will provide and support quality wildlife habitat. The objective of this study was to evaluate the forage production and stocking potential of an unmanaged wilderness area in east Texas. Four different community types were evaluated for forage yield, forage availability, and browse utilization for white-tailed deer. Results show that although a wide range of forage yields were measured in the spring, summer forage yield did not differ among the various communities. Availability also differed between community types, but …

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Endocidal Regulation Of Secondary Metabolites In The Producing Organisms, Shiyou Li, Ping Wang, Wei Yuan, Zushang Su, Steven H. Bullard Jan 2016

Endocidal Regulation Of Secondary Metabolites In The Producing Organisms, Shiyou Li, Ping Wang, Wei Yuan, Zushang Su, Steven H. Bullard

Faculty Publications

Secondary metabolites are defined as organic compounds that are not directly involved in the normal growth, development, and reproduction of an organism. They are widely believed to be responsible for interactions between the producing organism and its environment, with the producer avoiding their toxicities. In our experiments, however, none of the randomly selected 44 species representing different groups of plants and insects can avoid autotoxicity by its endogenous metabolites once made available. We coined the term endocides (endogenous biocides) to describe such metabolites that can poison or inhibit the parent via induced biosynthesis or external applications. Dosage-dependent endocides can selectively …

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